//package cn.edu.sdjzu.xg.kcsj.filter;
//
//
//import util.TokenHelper;
//
//import javax.servlet.*;
//import javax.servlet.annotation.WebFilter;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import java.io.IOException;
////令牌过滤器
//@WebFilter(filterName = "TokenFilter",urlPatterns = {"/*"})
//public class TokenFilter implements Filter {
//    public void init(FilterConfig config) throws ServletException {
//
//    }
//    public void doFilter(ServletRequest req, ServletResponse resp,
//                         FilterChain chain) throws ServletException, IOException {
//        System.out.println("TokenFilter - encoding begins");
//        HttpServletRequest request =(HttpServletRequest) req;
//        HttpServletResponse response =(HttpServletResponse) resp;
//        String path = request.getRequestURI();
//        Object token = request.getHeader("token");
//        //登录时不用验证token
//        if (path.contains("login")) {
//            chain.doFilter(req, resp);
//        }else if(token!=null){
//            //解析token
//            String jwt_str = TokenHelper.verify(token.toString(), response).toString();
//            response.getWriter().println(jwt_str);
//            chain.doFilter(req, resp);
//        }else {
//            response.getWriter().println("no have token!");
//        }
//        System.out.println("TokenFilter - encoding ends");
//    }
//    public void destroy() {
//    }
//}